Fedora 19 : Upgrade from Fedora 18…

I finally got round to upgrading my desktop machine to Fedora 19. The experience was pretty similar to upgrade from Fedora 17 to Fedora 18.

This time I had to remove FireFox, as it was holding on to Fedora 18 packages. Once I removed and re-added it I could complete a “yum update”. Things seem to be OK.

The DropBox repository is lagging behind again…

I still think it’s better to do clean installations, but I don’t have time to do that now. Perhaps when I get back from South America I’ll do it properly.

Cheers

Tim…

 

 

Fedora 19 Alpha…

For those eager beavers out there, you can now get hold of Fedora 19 Alpha from the pre-release location.

The release notes can be found here. I’m keen to check out the improvements to MATE in version 1.6, as this is now my standard desktop.

Cheers

Tim…

Update: It installs in Oracle VirtualBox and the guest additions install correctly, so it’s looking good so far. :)

Oracle Linux : Frequently Asked Questions (FAQs)…

I mentioned in a previous post that my company were planning to move all of our middle tier infrastructure and some of our Oracle databases to Oracle Linux running on a virtual infrastructure. That process is now underway.

Persuading the company to ditch Red Hat Enterprise Linux (RHEL) in favor of Oracle Linux took a bit of effort, partly due to some Fear, Uncertainty and Doubt (FUD) spread by one of the vendors we use. In the process of trying to counter the FUD I put together an Oracle Linux FAQ document. I thought it might come in handy for anyone else in a similar position, so I thought I would make it available on my site.

As I say at the top of the article, this includes some of my opinions as well as facts. This made me a little nervous, so I thought I would run it by an expert before I let it loose.  Big thanks to Lenz Grimmer for giving the article the once-over. His corrections and suggestions were very welcome!

Cheers

Tim…

PXE Installations on RHEL6 / OL6

I spent yesterday neatening up a few old articles. For the most part it is a bit of a dull process, but it has to be done every so often.

With what’s going on at work, it seemed like a good idea bring my old Kickstart and PXE Installation articles up to date. My kickstart article was written in the RHEL3 era which needed bringing up to date. Nothing has really changed about the process, but some new screen shots from OL6 make it look a little fresher. My old PXE Installation article was written against RHEL5/OL5, so I figured things wouldn’t have changed much between that and RHEL6/OL6… Wrong! I ended up having to write a new article specifically for PXE Installations on RHEL6/OL6.

I think that’s enough of me pretending to be a Linux sysadmin for a while… :)

Cheers

Tim…

All change. Virtualization, here we come!

Followers of the blog will know I dig virtualization. I first ran Oracle in virtualized environments over a decade ago.

In my current company there is a strong virtualization presence in the Windows space. Pretty much all Windows servers, including those running MS SQL Server, are actually VMs running on a VMware farm. The UNIX/Linux side is a little different. Most stuff is still done on physical boxes and what little virtualization is done, uses CentOS and KVM for freebie open source solutions.

There are a lot of architectural changes going on at the moment and I’ve been pushing *very hard* for a switch to the virtual infrastructure (VI) for all our middle tier servers and a few of our databases. It is looking very likely (but not guaranteed) that this will happen.

Q: What is the incentive to switch to a virtualized environment?
A: We have a bad spread of resource utilization at the moment. Some very big boxes doing very little work, but in security zones that are too unsafe to use them for other purposes. Other boxes will soon be maxed out because they have been used to consolidate services. What’s more, some of the servers that are used for consolidation have multiple, conflicting, installations on them which are already starting to cause administration headaches.

Q: How can virtualization help with our resource utilization?
A: Using a 12 core server with 60G of RAM for a little Apache reverse proxy is crazy. For the sake of resilience, we have multiple of these. That’s just the tip of the iceberg. Imagine adding those servers to the farm, carving out some little VMs and leaving all the rest of the resources to do cool stuff with. Sounds like a no-brainer to me. :)

Q: How can virtualization products ease our administration headaches?
A: By far the biggest administration headaches we are seeing in the middle tier relate to having multiple installations of products on a single machine. Doing upgrades and trying to remove old software can cause no end of headaches. Some of our old boxes have 30+ installations on them. It does your noggin in when you are trying to find out what is going on. You often spend much more time trying to identify which installation you should be looking at, than actually doing the task you’ve been asked to do. By moving to the VI we can add a greater level of separation between some of these installations, making life much clearer. Our current vision is one installation per VM. To upgrade we set up new VMs, migrate the services on to them and bin the old VMs. Everything remains clean and simple.

Q: What virtualization product should we use?
A: We have a big investment in VMware. There is a dedicated team who manage this infrastructure and know what they are doing. IMHO it is only Fear, Uncertainty and Doubt (FUD) that prevents other people in the company moving some or all of the Linux stuff on to that infrastructure. Oracle products are only part of the infrastructure, but we understand and accept the Oracle licensing, support and certification implications of this move.

Q: What version of Linux will we be using?
A: Oracle Linux! Yeah baby!

Q: So nothing can go wrong?
A: Don’t be stupid. We are bound to get some pain points, but I think it will be a fantastic move in the right direction.

So now all that remains is to get the final approval and start moving this stuff on to the VI. If this happens I will be ecstatic. If it doesn’t I think my tantrums-per-day ratio will increase, but I’m bottom of the food chain in the company, so I will have to do what I’m told. :) Fingers crossed.

Cheers

Tim…

RHCE Certification Articles (continued)…

I mentioned in my previous post on this subject that I had 5 more objectives yet to cover. The articles for those objectives have now been added to the website.

That completes the set!

The articles for both exams are available here. I also have a page listing the objectives for both exams, with links to each of my articles that cover them.

Now I just have to find the time to prepare for and sit the exams… :)

Cheers

Tim…

UltraEdit on Fedora 18…

I was using UltraEdit 3.3 on Fedora 17 with no problems. After the upgrade to Fedora 18 it continued to work fine. Then I noticed there was a newer build of 3.3 on the IDM website, so I downloaded and installed it. Unfortunately, it didn’t work. I guess it was a later build for Fedora 17, not a new Fedora 18 build.

I dropped the guys at IDM an email and they did a new build straight away and it worked fine. This build is available from the website now.

It’s nice when people write cool apps and back them up with good service when you need help!

Cheers

Tim…